Shouldn't only be in pockets experienced in sums of hours rather than days or weeks (or god-forbid) months. Life just seems a relentless round of disappointment and knock backs. I wonder now if the English idea of manners and politeness has been our downfall. Only the tough thrive.
Ok, I don't want to be all head-tilty, but are you ok? Being in a constant state of bliss isn't necessarily attainable, but a general level of contentment should be an achievable goal, and for you to feel as though there are more positives than negatives suggests that you are have a harder time of it than most. MN is a great place to vent and seek support.